{"id":"CVE-2026-118655","sourceIdentifier":"security-advisories@github.com","published":"2026-10-28T20:17:22.723","lastModified":"2026-10-29T19:17:18.690","vulnStatus":"Undergoing Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, middleware.Static can decode an already decoded Request.URL.Path a second time. Double-encoded separators can consequently be reconstructed before filesystem resolution. This can reach a file under a guarded route when the static middleware is registered globally. This issue is fixed in 4.15.3 and 5.2.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"labstack","product":"echo","versions":[{"version":">= 5.0.0, < 5.2.0","status":"affected"},{"version":"< 4.15.3","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-29T18:29:35.386733Z","id":"CVE-2026-118655","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-174"}]}],"references":[{"url":"https://github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6","source":"security-advisories@github.com"},{"url":"https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725","source":"security-advisories@github.com"},{"url":"https://github.com/labstack/echo/issues/2599","source":"security-advisories@github.com"},{"url":"https://github.com/labstack/echo/pull/3006","source":"security-advisories@github.com"},{"url":"https://github.com/labstack/echo/releases/tag/v4.15.3","source":"security-advisories@github.com"},{"url":"https://github.com/labstack/echo/releases/tag/v5.2.0","source":"security-advisories@github.com"},{"url":"https://github.com/labstack/echo/security/advisories/GHSA-xwq5-6cqp-vx96","source":"security-advisories@github.com"}]}